package org.tmad.ocms.web;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class LogoutServlet
 */
public class LogoutServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public LogoutServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		//let us log out the user.
		//invalidate the user session.
		request.getSession().removeAttribute("username");
		request.getSession().invalidate();		

		//let us show message to the user. it is not really error but re-using same error style for this message
		request.setAttribute("error", "Successfully logout completed.");
		//let us show the login page again
		RequestDispatcher dispatcher = getServletContext()
				.getRequestDispatcher("/login.jsp");
		dispatcher.forward(request, response);

		
	}
	
}
